Journal
PHYSICAL REVIEW LETTERS
Volume 102, Issue 21, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.102.217202
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Funding
- DOE [DEFG03-01ER45925, DE-AC03-76SF00515]
- NSF [DMR-0342832]
- SGF at Stanford University
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We have proposed an exactly solvable quantum spin-3/2 model on a square lattice. Its ground state is a quantum spin liquid with a half-integer spin per unit cell. The fermionic excitations, dubbed as spinons, are gapless with a linear dispersion, while the topological vison excitations are gapped. Moreover, these massless fermionic spinon excitations are topologically stable. Thus, this model is, to the best of our knowledge, the first exactly solvable model of half-integer spins whose ground state is an algebraic spin liquid..
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